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No 'alien DNA'

Mr Coleman, who worked in the chemistry department at Cardiff University , was confirmed as having a history of anxiety and depression and had been prescribed anti-depressants in the past.

He also had a history of alcohol misuse, which contributed to his anxiety and depression issues.

The inquest heard Mr Coleman became very nervous in social situations, especially where crowds were present, and often suffered with insomnia and would become frustrated with himself, exclaiming: “Why am I like this?”.

However detective chief inspector Ceri Hughes confirmed after DNA and fingerprint analysis of Mr Coleman’s flat no “alien DNA” was discovered that would suggest a third party was involved.

The only DNA that was found was that of Mr Coleman himself as well as that of his ex-partner, Rebecca Webber, who moved out of his flat in October 2015 after a 17-year relationship and still had some possessions at Mr Coleman’s flat.

The end of the relationship took its toll on Mr Coleman, the inquest heard, prompting his parents to pay for some counselling sessions which he said made him feel “a bit better”.

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'A great son'

Det Chief Insp Hughes confirmed CCTV footage from the block of flats did not show anyone unexpected and all of Mr Coleman’s neighbours were very helpful in giving information.

She also stated that 10 of Mr Coleman’s neighbours were present in the block on the night of Saturday, May 14, and none of them heard anything coming from Mr Coleman’s flat that raised any concern, resulting in her concluding that there was no third-party involvement.

Coroner Philip Spinney recorded a narrative conclusion that Mr Coleman was found dead at his home.

“The evidence that I have heard does not fully disclose to me how Mr Coleman came by his injuries,” he said.

“I accept the police evidence that there inquiries revealed that there was no third-party involvement.

“The deceased suffered multiple blunt injuries to the head and trunk that led to his death but the circumstances that led to his death are unknown.”

Mr Coleman’s father, Raymond Coleman, said: “Gary was a great son all of his life and had nothing to be ashamed about.”